| /******************************************************************************* |
| * Copyright (c) 2007, 2008 Wind River Systems, Inc. and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Anton Leherbauer (Wind River Systems) - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.cdt.internal.ui.text; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.Document; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextDoubleClickStrategy; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.ITypedRegion; |
| import org.eclipse.jface.text.Region; |
| import org.eclipse.jface.text.TextUtilities; |
| |
| import org.eclipse.cdt.ui.text.ICPartitions; |
| |
| import org.eclipse.cdt.internal.ui.editor.CDocumentSetupParticipant; |
| |
| /** |
| * Double click strategy aware of string and character syntax rules. |
| * |
| * @since 4.0 |
| */ |
| public class CStringDoubleClickSelector extends CDoubleClickSelector { |
| |
| private String fPartitioning; |
| private ITextDoubleClickStrategy fFallbackStrategy; |
| |
| /** |
| * Creates a new string double click selector for the given document partitioning. |
| * |
| * @param partitioning the document partitioning |
| */ |
| public CStringDoubleClickSelector(String partitioning) { |
| this(partitioning, null); |
| } |
| |
| /** |
| * Creates a new string double click selector for the given document partitioning. |
| * |
| * @param partitioning the document partitioning |
| * @param doubleClickStrategy the fallback double click strategy |
| */ |
| public CStringDoubleClickSelector(String partitioning, |
| ITextDoubleClickStrategy doubleClickStrategy) { |
| fPartitioning= partitioning; |
| fFallbackStrategy= doubleClickStrategy; |
| } |
| |
| /* |
| * @see ITextDoubleClickStrategy#doubleClicked(ITextViewer) |
| */ |
| @Override |
| public void doubleClicked(ITextViewer textViewer) { |
| int offset= textViewer.getSelectedRange().x; |
| |
| if (offset < 0) |
| return; |
| |
| IDocument document= textViewer.getDocument(); |
| |
| IRegion region= matchString(document, offset); |
| if (region != null) { |
| if (region.getLength() >= 2) { |
| textViewer.setSelectedRange(region.getOffset() + 1, region.getLength() - 2); |
| } |
| } else if (fFallbackStrategy != null) { |
| fFallbackStrategy.doubleClicked(textViewer); |
| } else { |
| region= selectWord(document, offset); |
| if (region != null) { |
| textViewer.setSelectedRange(region.getOffset(), region.getLength()); |
| } |
| } |
| } |
| |
| private IRegion matchString(IDocument document, int offset) { |
| try { |
| if ((document.getChar(offset) == '"') || (document.getChar(offset) == '\'') || |
| (document.getChar(offset - 1) == '"') || (document.getChar(offset - 1) == '\'')) |
| { |
| ITypedRegion region= TextUtilities.getPartition(document, fPartitioning, offset, true); |
| // little hack: in case this strategy is used in preprocessor partitions, the string |
| // partition inside the preprocessor partition must be computed in an extra step |
| if (ICPartitions.C_PREPROCESSOR.equals(region.getType())) { |
| String ppDirective= document.get(region.getOffset(), region.getLength()); |
| int hashIdx= ppDirective.indexOf('#'); |
| document= new Document(ppDirective.substring(hashIdx+1)); |
| new CDocumentSetupParticipant().setup(document); |
| int delta= region.getOffset() + hashIdx + 1; |
| region= TextUtilities.getPartition(document, fPartitioning, offset - delta, true); |
| return new Region(region.getOffset() + delta, region.getLength()); |
| } |
| return region; |
| } |
| } catch (BadLocationException e) { |
| } |
| |
| return null; |
| } |
| } |